Each bank has its own numbering characteristics. Generally, the card number starts with the bank classification, followed by the location number and user number, etc.

For details, you need to consult the relevant banks. The customer service hotlines of each bank can be found:

ICBC 95588|Agricultural Bank of China 95599|Bank of China 95566|CCB 95533|Postal Savings Bank 95580|Investment 95555|Transportation 95559

Everbright 95595|CITIC 95558|Industrial 95561|Minsheng 95568|Guangfa 95508|Shandong Development Bank 95528|Shenfa 95501

Just go to the manual to query...

Wish you good luck! Sincere answers, mutual help and progress, I hope it can help you solve the problem, please accept it if you are satisfied!